7. HARDER Memory Game - Test Your Memory - Letters - training
a new group of random letters is displayed each time your answer is correct
the length of the test text is increased by one after each correct response

8. HARDER Memory Game - Test Your Memory - Numbers - training
a new group of random digits is displayed each time your answer is correct
the length of the test text is increased by one after each correct response

9. HARDEST Memory Game - Test Your Memory - Letters - timed test
a new group of random letters is displayed each time your answer is correct
the length of the test text is increased by one after each correct response
after a few seconds the text will disappear

10. HARDEST Memory Game - Test Your Memory - Numbers - timed test
a new group of random digits is displayed each time your answer is correct
the length of the test text is increased by one after each correct response
after a few seconds the text will disappear

11. Card Counter - training
one new random card is added to the test text each time your answer is correct
remember the cards in sequence

12. Card Counter - timed test
one new random card is added to the test text each time your answer is correct
remember the cards in sequence
after a few seconds the text will disappear

13. Card Counter - frequency training
you must classify cards by frequency from memory
one new random card is added to the test text each time your answer is correct

14. Card Counter - frequency timed
you must classify cards by frequency from memory
one new random card is added to the test text each time your answer is correct
after a few seconds the text will disappear

15. Playing Card Counter - Rank - see picture of the card - training
one new random card is added to the test each time your answer is correct
remember the cards in sequence

16. Playing Card Counter - Rank and Suit - see picture of the card - training
one new random card is added to the test each time your answer is correct
remember the cards' Rank and Suit in sequence